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62 Security Dealer & Integrator / www.SecurityInfoWatch.com October 2018
In general, LiDAR costs more than
an average ground-based radar sys-
tem. Both technologies can be easily
mounted onto existing structures,
eliminating the need to dig trenches
and run excess cabling.
Radar can also be low-power con-
sumption devices; and some can be
solar-powered.
Long-Range Detection
As Zussman explains, a single
ground-based radar can reach up
to 100 degrees in azimuth and 30
degrees in elevation – such expansive
azimuth and elevation capabilities
enable a single radar to cover an area
with changing topography without
the need for additional units.
"Where 12 fixed surveillance cam-
eras would be required for protecting
an industrial facility, the same cover-
age could be achieved using a single
radar unit," Zussman says. "Weather
and environmental conditions such as
rain, snow or fog – which commonly
plague video surveillance systems –
do not affect radar."
Another defining characteristic
of radar technology is its long-range
detection capabilities that enable early
detection and alerting. When radar is
deployed around the perimeter of a
facility, approaching suspects will be
automatically detected far away from
the perimeter and security personnel
will be alerted long before they reach
the fence line. "Commercial radar is
beginning to penetrate the security
market, providing great detection for
targets more than half a mile away,"
Zussman says.
Because radar's radio waves have
less absorption compared to the
LiDAR's light waves when contacting
objects, they can work over a longer
distance and are oen used in air-
planes and battleships to detect poten-
tial threats hidden by weather condi-
tions such as fog, rain, and snow and
dust. In fact, Zusmman says the great-
est differentiator between LiDAR and
radar can be seen in field deployments
with adverse weather conditions.
"LiDAR can be easily affected by
fog, rain, or even dust," Zussman says.
"Light waves have short wave lengths –
less than one-millionth of a meter to
be exact – meaning they are easily
absorbed by water droplets in the air.
On the other hand, radio waves reach
up to around five centimeters in wave-
Linking radar with video surveillance and VMS enables security personnel to
watch and track threats in real-time with the ability to intervene immediately.
Perimeter Security
Most LiDAR imagery has color gradients that indicate an object's elevation, and
provides detail in three dimensions, which is useful in identification.
Image:
Velodyne
Photo:
Magos